• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 120
  • 26
  • 9
  • 7
  • 5
  • 5
  • 5
  • 5
  • 5
  • 5
  • 4
  • 3
  • 2
  • 1
  • 1
  • Tagged with
  • 235
  • 36
  • 33
  • 17
  • 16
  • 14
  • 14
  • 14
  • 13
  • 13
  • 13
  • 12
  • 12
  • 12
  • 12
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
211

Stress development of Carton Board Packages with Hill's Model Subjected to Concentrated Loads

Grethes, Jonas, Rydberg, Anton January 2016 (has links)
The work has been carried out mainly for Tetra Pak within the project "A New Model for Deformation of Carton boardPackages by Manual Handling". Tetra Pak is specialized in food packaging, its processing and distribution. The purpose of this thesis was to implement a new carton board model for the finite element method which describes both the elastic and plastic deformation, this is called Hill’s model.This model is used to describe orthotropic materials, which a carton board is. Next, examine the differences that occurred in terms of principal stress and force-displacement diagram for different carton board packages when loaded with different objects. Simulations were performed in the finite element program Ansys APDL. To start with, a literature study was performed to cover the theory of the problem, problem causes and other work carried out in the same area. Then the material model was constructed and the simulations were performed. After this, all the data was gathered and analyzes performed. The introduction of the new material model was successful. The result shows how the carton board packages act until the maximum force the package can engage, in some cases also what happens after this state. The results also show how the principal stresses develop and the size of these. / Examensarbetet har utförts för i huvudsak Tetra Pak inom projektet "A New Model for Deformation of Carton Board Packages by Manual Handling". Tetra Pak är specialister på livsmedelsförpackningar, dess bearbetning och distribution. Syftet för detta examensarbete var att införa en kartongmodell för finita elementmetoden som beskriver både elastiskt och plastiskt tillstånd, denna kallas Hills modell. Modellen används för att beskriva ortotropa material, vilket kartong är. Därefter undersöka skillnader som uppstod vad gäller huvudspänningar och kraftförskjutningsdiagram för olika kartongförpackningar när dessa utsattes för olika tryckande objekt. Simuleringar utfördes i finita elementprogrammet, Ansys APDL. Till att börja med utfördes en litteraturstudie för att täcka teorin om problemet, problemorsaker och andra utförda arbeten inom samma område. Därefter gjordes materialmodellen var på simuleringarna utfördes. Efter detta samlades all data in och analyser utfördes. Införandet av den nya materialmodellen lyckades. Resultatet visar hur kartongförpackningarna agerar fram till den maximala kraften som förpackningen kan ta upp, i vissa fall även vad som händer efter detta tillstånd. Resultaten visar också hur huvudspänningarna utbreder sig och storleken på dessa.
212

A case study: Process and techniques used in land preservation strategies in the Crafton Hills, Yucaipa, California

Kelley, Albert J. 01 January 1991 (has links)
No description available.
213

Parent involvement at the secondary level? It can be done!

Borucki, Suzanne Janette 01 January 1998 (has links)
No description available.
214

The role of imaginative literature in First Year Composition

Cowles, Randee Teresa 01 January 2004 (has links)
This study steps into a long running discussion of the place of imaginative literature in First Year Composition (FYC) courses. Chapter one surveys the scholarship, including the work of Erika Lindeman and Gary Tate, two compositionists whose debate has been at the center of this discussion, and three scholars' responses to the issues their debate raises. Instructors might be able to include imaginative literature in FYC courses if they use the literature to support the courses' rhetorical goals rather than to "teach the literature" itself.
215

Housing and hopes: Mowbray's elderly whites and the effects of reforms in South African property legislation

Bell, Simon Robert 22 November 2016 (has links)
No description available.
216

Hur uppnås framgång i strid i bebyggelse? : En teoriprövande jämförande flerfallsstudier av Alice Hills teori om strid i bebyggelse

Sandberg, Johan January 2021 (has links)
With a world than is becoming more and more urbanized and with more importance being placed on cities the likelihood that our urban centers will be the focus of future warfare increases. This study will examine how Alice Hills theory can explain success in urban warfare in a comparative case study. The purpose of this study is to affect the validity of Hills theory. This method used in this study is a theory testing case to examine to what extent Hills´s theory can explain the failure during the first battle of Grozny and the success during the second battle of Grozny and by doing so increasing the validity of hills Theory. The two cases have similar background variables, which allows for a structured comparison of the two cases. The analysis is based on Hills’s success factors in urban warfare.  The results show the importance of morale and skill in urban combat.
217

Stavba v krajině - Winery / Architecture in Landscape – Winery

Nováková, Natalie January 2017 (has links)
Urbanist concept in the cadastral area of Strachotín village is based on spiral inspirations. The village is located on the banks of Novomlýnské nádrže and offers a wonderful view of Pálava. Therefore, for me, the most powerful motif has become the nature, which is cyclical, but does not repulse. The spiral has been applied to the driveway to a selected location offering the best view and communicating with the village. The function of the winery was supplemented by a small recreational riding complex. The functional solution offers the possibility of visiting, family recreation or organizing corporate events and presentations. When embedding functions, it was considered the most convenient mode of transport that would capture that function. This was further refined by the creation of public spaces that link to the various sites and the whole area. The actual mass solution of objects is inspired by Pálava itself, which is hard but delicate. For my most important objects, it "crystallized" and encouraged them to cover the greenery with the least important visitor.
218

Developing a Useful Set of Proxy Elements for the Targeting and Exploration of Gold Deposits, Black Hills, South Dakota

Harp, Michael T. 13 December 2010 (has links)
No description available.
219

Sequence Stratigraphy of Basal Oquirrh Group Caronates (Bashkirian) Thorpe Hills, Lake Mountain, Wasatch Front, Utah

Derenthal, Andrew D. 10 November 2011 (has links) (PDF)
The Early Pennsylvanian (Bashkirian/Morrowan) Bridal Veil Limestone of north-central Utah was deposited in the eastern portion of the rapidly subsiding Oquirrh basin. The 420 meter-thick Bridal Veil Limestone displays distinct cyclicity formed by stacked, meter to decameter scale high-frequency sequences and their constituent parasequences. Though no one ideal cycle may be defined for the Bridal Veil Limestone, each high-frequency sequence and parasequence contains a general shallowing upward trend that ranges from anaerobic to dysaerobic mudstone at the base to skeletal wackestone to mud-dominated packstone, capped by heterozoan grain-rich carbonates or siliciclastic tidalites. Cycles bounded by exposure surfaces, indicated by micro-brecciation, rhizoliths, laminated calcite or silica crusts, rip-up clasts, centimeter-scale teepee structures, and/or pronounced erosional relief are termed high-frequency sequences. Those bounded by marine flooding surfaces are defined as parasequences. Thusly defined, the Bridal Veil Limestone is divided into 25 high-frequency sequences designated BVL-1 through BVL-25. Overall, two distinct sets of high-frequency sequences may be observed in the Bridal Veil Limestone. Sequences comprising the lower half of the formation (BVL-1 through BVL-12) are thicker, muddier, and less sand-prone than sequences in the upper half of the formation (BVL-13 through BVL-25), indicating an overall change in oxygenation, depositional texture, and accommodation upward in the section. Tracing of key beds and surfaces between the Thorpe Hills, Lake Mountain, and the Wasatch Range (spanning a distance greater than 50 miles) reveals that deposition was remarkably uniform across the southeastern part of the Oquirrh basin which we herein designate the Bridal Veil sub-basin and distinct from coeval formations in the southern Oquirrh basin, Ely basin, and Wyoming shelf. Mudstone and wackestone textures comprise a large portion of the formation by volume. Grain-rich carbonates are almost exclusively heterozoan in composition, indicating that the sub-basin was subphotic to aphotic through Early Pennsylvanian time.
220

MILKY BODIES, OFF-WHITE MENACE: IDENTITY, MILK AND ABJECT FEMININITY IN RECENT US MEDIA

Oberhammer, Tierney 12 November 2010 (has links)
No description available.

Page generated in 0.0348 seconds